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APEX EPMROTEOH, INC.
<br /> STANDARD OPERATING PROCEDURES
<br /> Operation & Maintenance (O&M)
<br /> SOP-4
<br /> SAMPLE IDENTIFICATION AND CHAIN- water temperature,conductivfty,or pH stabilize,a ma)amum of
<br /> OF-CUSTODY PROCEDURES ten wetted-casing volumes of groundwater have been
<br /> recovered,or the well is bailed dry. When practical,the
<br /> Sample identification and chain-of-custody procedures ensure groundwater sample should be collected when the water level
<br /> sample irtegnty as well as document sample possession from in the well recovers to at least 80 percent of its static level.
<br /> the time of collection to ultimate disposal. Each sample
<br /> container submitted for analysis is labeled to iderrtify the job The sampling equipment consists of either a"Teflon"bailer,
<br /> number,date,time of sample collection,a sample number PVC bailer,or stainless steel bladder pump with a"Teflon
<br /> unique to the sample,any in-field measurements made, bladder. If the sampling system is dedicated to the well,then
<br /> sampling methodology,name(s)of on-site personnel,and any the bailer is usually"Teflon,"but the bladder pump is PVC with
<br /> otner pertinent field observations also recorded on the field a polypropylene bladder. In general and depending on the
<br /> excavation or boring log. intended laboratory analysis,4&-milliliter glass,volatile organic
<br /> analysis(VOA)vials,with"Teflon"septa,are used as sample
<br /> Chain-of-custody forms are used to record possession of the containers.
<br /> sample from time of collection to arrival at the laboratory.
<br /> During shipment,the person with custody of the samples will The groundwater sample is decanted into each VOA vial in
<br /> relinquish them to the next person by signing the chain-of- such a manner that there is no meniscus at the top of the vial.
<br /> custody form(s)and noting the date and time. The sample- A cap is quickly secured to the top of the vial. The vial is then
<br /> control officer at the laboratory will verify sample integrity, inverted and gentlytapped to see if air bubbles are present. If
<br /> correct preservation,confirm collection in the proper none are present,the vial is labeled and refngerated for
<br /> container(s),and ensure adequate volume for analysis. delivery,under strict chain-of-custody,to the analytical
<br /> laboratory. Label information should include a unique sample
<br /> If these conc%ons are met,the samples will be assigned identification number,job identification number,date,time,type
<br /> unique laboratory log numbers for identification throughout of analysis requested,and the sampler's name.
<br /> analysis and reporting. The log numbers will be recorded on
<br /> the chain-of-custody forms and in the legally-required log book For quality control purposes,a duplicate water sample is
<br /> maintained in U-re laboratory. The sample description,date collected from each well. This sample may also be analyzed or
<br /> received,clierfs name,and any other relevant information will put on hold at the laboratory. When required,a trip blank,
<br /> a!so be recorded. prepared at the laboratory,is placed in the transport cooler. It
<br /> is labeled similar to the well samples,remains in the cooler
<br /> SOP-5 during transport,and is analyzed by the laboratory along with
<br /> LABORATORY ANALYTICAL QUALITY the groundwater samples. In addition,a field blank may be
<br /> ASSURANCE AND CONTROL prepared in the field when sampling equipment is not
<br /> dedicated. The field blank is prepared after a pump or bailer
<br /> In addition to routine instrument calibration,replicates,spikes, has been either steam cleaned or properly washed,prior to use
<br /> blanks,spiked blanks,and certified reference materials are in the next well,and is analyzed along with the other samples.
<br /> routinely analyzed at method-specific frequencies to monitor The field blank analysis demonstrates the effectiveness of the
<br /> precision and bias. Additional components of the laboratory in-field cleaning procedures to prevent cross-contamination,.
<br /> Qualify Assurance/Quarry Control program include: To minimize the potential for cross-contamination between
<br /> 1. Participation in state and federal laboratory wells,all well development and water sampling equipment not
<br /> a=edtatioNcertification programs; dedicated to a well is either steam cleaned or properly washed
<br /> between use. As a secondary precautionary measure,wells
<br /> 2. Participation in both U.S. EPA Performance are sampled in order of least to highest concentrations as
<br /> Evahsation studies(WS and WP studies)and inter- established by available previous analytical data.
<br /> laboratory performance evaluation programs;
<br /> In the event the water samples cannel be submitted to the
<br /> 3. S.andard operating procedures describing routine analytical laboratory on the same day they are collected(e.g.,
<br /> anc periodic instrument maintenance; due to weekends or holidays),the samples are temporarily
<br /> stored until the first opportunity for submittal either on water ice
<br /> 4. "OLX-of-Control"/Corrective Action documentation in a cooler,such as when in the field,or in refrigerator at
<br /> procedures.and, ApeXs office.
<br /> 5 hluti-lewi review of raw data and client reports. SOP-9
<br /> VAPOR SAMPLING: 'TEDLAR" BAG
<br /> SAMPLING TECHNIQUE 3
<br /> SOP-7 Prior to vapor sampling,the vacuum system must reach a
<br /> GROUNDWATER PURGING AND stabilized air flow(cubic feet per minute) for approxmately 15
<br /> SAMPLING minutes_ Prior to the actual collection of the vapor sample.the
<br /> following data is recorded:air flow,temperature,and pressure
<br /> Price to Prater sampling,each well is purged by evacuating a at collection ports and gauges,
<br /> minimum of twee wetter well-casing volumes of groundwater.
<br /> When require^,purging will continue until either the discharge
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